I'm not really a fan of learning objectives either. For the record, here are Clark's seven reasons:

Objectives make a poor first impression

Stating objectives defers learner engagement

They also cause people to stop paying attention

They are a misapplication of Gagne

The rule that objectives must be stated is overly prescriptive

It's difficult to write good objectives, and few master it

Stating them is a waste of time

From my reading, these sever objections are really just one objection stated over and over. And an even more important point, to my mind, is that different people have different objectives. It takes a lot of presumption on the part of the teacher to state their objectives.